Nanoparticle pattern deposition from gas phase onto charged flat surface

Kang, Moo Il; Kim, Hyoungchul; Han, Bangwoo; Suh, Jeongsoo; Park, Jeonghan; Choi, Mansoo

doi:10.1016/j.mee.2003.11.007

Cited by 26 publications

(23 citation statements)

References 12 publications

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“…Meanwhile, there has been a growing focus on the direct position or deposition pattern of particles in the manufacturing of photonic or quantum electronic devices. In industrial processes, particle charging is essential in enabling us to move and deposit particles on desired spots (Krinke et al 2001;Jacobs et al 2002;Kang et al 2004;Kim et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Unipolar Charging of Fine and Ultra-Fine Particles Using Carbon Fiber Ionizers

Han

Kim

et al. 2008

Aerosol Science and Technology

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A simple and novel unipolar charger using carbon fiber ionizers was developed to effectively charge fine and ultra-fine aerosol particles without the generation of ozone. The particle penetration in the charger was investigated for non-charged, neutralized, and singly charged particles in the size range of 20-200 nm. Particle loss and the intrinsic, exit and extrinsic charging efficiencies of fine and ultra-fine particles were also investigated for non-charged particles at different applied voltages to the charger. Particle penetrations in the charger were nearly 100% for particles larger than 20 nm, irrespective of the initial particle charging state. Particle losses in the charger could be decreased by decreasing the applied voltage to the charger from 4.0 kV to 2.3 kV. The intrinsic charging efficiencies were proportionally increased with the applied voltage, whereas the exit charging efficiencies were almost independent of the applied voltage. Therefore, the extrinsic charging efficiency of the charger becomes higher for the lower applied voltage (2.3 kV), at which about 60% of 20 nm particles were charged. Little (less than 4 ppb) to no ozone was generated under all operation conditions. It can be concluded that the newly developed unipolar charger using carbon fiber ionizers can charge fine and ultra-fine particles at least as effectively as currently available unipolar chargers, but with the major advantage of negligible ozone generation, a highly desirable feature if the charged particles are to be used for chemical or biological analysis.

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Section: Introductionmentioning

confidence: 99%

Unipolar Charging of Fine and Ultra-Fine Particles Using Carbon Fiber Ionizers

Han

Kim

et al. 2008

Aerosol Science and Technology

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“…Nanoxerography is a parallel method to fabricate nanoparticle arrys by utilizing a conductive flexible stamp with patterns that can transfer charge patterns on non-conducting surface in a single step [38][39][40] . Fig.…”

Section: Nanoxerographymentioning

confidence: 99%

“…During the process of coating the PDMS stamp with metal through thermal evaporation, buckling of the metal coating can appear due to thermal expansion and contraction of the PDMS stamp 41) . To prevent the buckling, a sputtering method 38) has been suggested. In addition, uniform contact between a stamp and a substrate in large area and fabrication of reliable stamps with nanoscale resolution are issues.…”

Section: Nanoxerographymentioning

confidence: 99%

Assembly of Nanoparticles: Towards Multiscale Three-Dimensional Architecturing

Sung

Choi

2013

KONA

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“…For example, aerosol droplets containing small particles was selectively deposited on prepatterned electrodes [13,14], where the patterning resolution can be enhanced by introducing ions and utilizing the "electrostatic lens" [15]. In these electrostatic patterning studies, surface distribution of the electric charges is often controlled using conductive electrodes, chemically modifying the surface [6]; coating a layer of surfactant [10]; or transferring the charge from a PDMS stamp [16,17]. The electrostatic interaction between the incoming particles and the charged collecting surface preferentially attracts the particles to the patterned regions.…”

Section: Introductionmentioning

confidence: 99%

Programmable patterning of polymeric microparticles by floating electrodes-assisted electrospray

Zhang

Zhao

2012

J. Micromech. Microeng.

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We introduce an innovative method for patterning one or multiple types of polymeric microparticles by electrospraying them towards a collecting surface patterned with an array of microelectrodes. By independently programming the electric state of each microelectrode, microparticles can be confined within desired regions with a high patterning contrast. The patterning principle and the role of the floating electrodes are discussed. Co-patterning of multiple types of particles on a planar surface and along the vertical direction is demonstrated. With the superior co-patterning capacity and the simple configuration, this work is expected to facilitate the development of biosensing, microscale tissue engineering and other microparticle-based total analysis.

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Nanoparticle pattern deposition from gas phase onto charged flat surface

Cited by 26 publications

References 12 publications

Unipolar Charging of Fine and Ultra-Fine Particles Using Carbon Fiber Ionizers

Unipolar Charging of Fine and Ultra-Fine Particles Using Carbon Fiber Ionizers

Assembly of Nanoparticles: Towards Multiscale Three-Dimensional Architecturing

Programmable patterning of polymeric microparticles by floating electrodes-assisted electrospray

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